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Startpage > News > Calendar of Events > Magnetoelectric Effect and Multiferroica


Magnetoelectric Effect and Multiferroica

ZFM-Kolloquium, 19.11.12


From Maxwell equations is well known that electricity and magnetism are connected. A realisation of such connection in magnetoelectric materials is more complicated but it promises new ideas and mechanisms for modern electronics. Of special interest are materials in which magnetic and electric order exist simultaneously. These materials are called multiferroics and they allow the control of magnetization by electric fields and the control of electric polarization by magnetic fields.

Most interactions in physics are accompanied by characteristic excitations, which can be observed with spectroscopic techniques as absorption modes. The excitations responsible for the magnetoelectric coupling are called "electromagnons" and they can be observed at terahertz frequencies. Contrary to conventional magnons the electromagnons can be excited by the electric component of the electromagnetic wave and they contribute to the static dielectric permittivity. The suppression of electromagnons in external magnetic field provides a natural explanation for the magnetoelectric effects in broad frequency range between dc and terahertz.

In this talk both static and dynamic aspects of the magnetoelectricity will be discussed and illustrated using the results of recent experiments.

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Prof. Dr. Andrei Pimenov
Institut fĂŒr Festkörperphysik, Technische UniversitĂ€t Wien


ZFM - Zentrum fĂŒr Festkörperchemie und Neue Materialien


Montag, 19. November 2012, 17:15 bis 18:30 Uhr


Institut fĂŒr Physikalische Chemie und Elektrochemie (GebĂ€ude 2504, Dr.-Oetker-Hörsaal (Raum-Nr. 007))
Callinstraße 3a, 30167 Hannover

Ein Verschieben des Kartenausschnitts ist mit gedrückter Maustaste möglich.

Die Karte wurde uns freundlicherweise von Herrn Dr. Tobias Dahinden, Institut für Kartographie und Geoinformatik zur Verfügung gestellt.